Vaisala K-PATENTS PR-43, User Manual

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5. Startup
5.1 Startup
5.1.1 Initial check
Connect the refractometer, and check that it powers up properly, see Testing Ethernet
connection (page 14) . Use a web browser to open the refractometer homepage and check that
the serial number of the refractometer corresponds to that on the refractometer nameplate.
Check the parameters on the Parameters page and adjust them as needed, see Parameters
(page 18) . Remember to submit changes.
5.1.2 mA check
Measure the mA output. If the refractometer is not in the line (i.e. message is NO SAMPLE ), mA
out sends default mA. The default mA and mA maximum and minimum are set via web
browser on the
Parameters page, see Parameters (page 18) .
5.1.3 Calibration check
Wait until normal process conditions occur. The concentration reading is precalibrated at
delivery and a copy of the Refractometer calibration certificate is shipped with the
refractometer. If the diagnostic message is
Normal operation but the concentration reading
does not agree with the laboratory results, see Calibrating concentration measurement
(page 29) .
5.2 Viewing refractometer status
The basic information on the measurements is shown on the Main page of the refractometer,
see Main page (page 16) . More information is shown on the Diagnostics page, see Diagnostics
(page 17) .
The measurement result is calculated from the refractive index (n
D
and process temperature
(T) values. Both of these values are on the Main page.
In addition to these measurements, the refractometer monitors its internal temperature and
humidity, which both are available on the Diagnostics page. The internal temperature should
not be above 55 °C, and the humidity should be below 30 %.
Chapter 5 – Startup
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